File APIs for Java Developers
Manipulate DOC, XLS, PPT, PDF and many others from your application.
The moose likes Java in General and the fly likes Problem with DecimalFormat Big Moose Saloon
  Search | Java FAQ | Recent Topics | Flagged Topics | Hot Topics | Zero Replies
Register / Login
JavaRanch » Java Forums » Java » Java in General
Bookmark "Problem with DecimalFormat" Watch "Problem with DecimalFormat" New topic

Problem with DecimalFormat

Yuriy Zilbergleyt
Ranch Hand

Joined: Dec 13, 2004
Posts: 429
This code (which I didn't write) occasionally prints an error like 'price: 7.949999809265137java.lang.NumberFormatException: For input string: ".795E1795E1"'

Anyone know how this could happen?

Norm Radder
Ranch Hand

Joined: Aug 10, 2005
Posts: 691
Could you post an example that ALWAYS gets the error?
In other words, write some sample code that sets the value of price to cause the error. Then run that simple program and copy/paste all of the output here.
Campbell Ritchie

Joined: Oct 13, 2005
Posts: 45251
I hope nobody is using that code in real life; it is bad enough using double values for money, but float with its lower precision is even worse.
Paul Clapham

Joined: Oct 14, 2005
Posts: 19845

Besides, it is a very roundabout way of rounding a number to two decimal places.
I agree. Here's the link:
subject: Problem with DecimalFormat
It's not a secret anymore!